let a = 10
let c = 20
let d = 30

function show() {
    console.log('1111111111111')
}

export default {
    a,
    c,
    show
}

function test() {
    console.log('函数');
}

export let num = 998;
export let name = "jack";
export function say() {
    console.log('say hello !');
}